/* SLLUG - design system. Reference: Brex (light canvas, single ember accent,
   Inter with negative tracking, flat hairline cards, dark announcement + footer). */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --ember:#ff5900; --ember-ink:#d94b00;
  --abyss:#000710; --carbon:#15191e;
  --ink:#000000; --paper:#ffffff; --fog:#f3f3f7; --fog2:#ececf2;
  --mist:#b9bbc6; --steel:#8b8d98; --pewter:#6f737b; --graphite:#60646c;
  --sans:'Inter',ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-tag:6px; --r:12px; --r-lg:16px;
  --wrap:1200px; --gut:24px;
  --shadow-float:0 18px 50px rgba(0,7,16,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.5;letter-spacing:-.011em;
  font-feature-settings:"calt" 0,"liga" 0;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.022em;line-height:1.15}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}

/* ---------- announcement bar ---------- */
.annc{background:var(--carbon);color:#fff;font-size:12.5px;font-weight:500;
  text-align:center;padding:7px 16px;letter-spacing:-.005em}
.annc a{color:var(--ember);font-weight:600}
.annc a:hover{text-decoration:underline}

/* ---------- header / nav ---------- */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--fog2)}
.nav-in{display:flex;align-items:center;gap:20px;height:64px;
  max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;
  letter-spacing:-.03em}
.brand .mark{width:26px;height:26px;flex:none}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink);padding:8px 12px;
  border-radius:8px;transition:background .18s,color .18s}
.nav-links a:hover{background:var(--fog);color:var(--ember-ink)}
.nav-links a.active{color:var(--ember-ink)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:6px}
.nav-ghost{font-size:14px;font-weight:500;padding:8px 12px;color:var(--ink)}
.nav-ghost:hover{color:var(--ember-ink)}
.burger{display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--fog2);
  background:var(--paper);border-radius:10px;cursor:pointer;align-items:center;justify-content:center}
.burger svg{width:20px;height:20px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);
  font-size:14px;font-weight:600;letter-spacing:-.01em;border-radius:var(--r);
  padding:10px 18px;cursor:pointer;border:1px solid transparent;transition:
  transform .12s,box-shadow .18s,background .18s,border-color .18s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-ember{background:var(--ember);color:#fff}
.btn-ember:hover{box-shadow:0 8px 22px rgba(255,89,0,.32)}
.btn-ghost{background:var(--paper);color:var(--ink);border-color:var(--mist)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-lg{padding:13px 24px;font-size:15px}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{box-shadow:0 8px 22px rgba(0,0,0,.24)}

/* ---------- hero ---------- */
.hero{padding:72px 0 40px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.02em;color:var(--ember-ink);background:#fff4ee;border:1px solid #ffdcc9;
  padding:5px 12px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(38px,6vw,68px);letter-spacing:-.032em;line-height:1.02}
.hero .lede{font-size:19px;color:var(--graphite);margin-top:20px;max-width:34ch;line-height:1.5}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-meta{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-meta .k{font-size:28px;font-weight:700;letter-spacing:-.03em}
.hero-meta .v{font-size:13px;color:var(--pewter)}
.hero-visual{position:relative}

/* terminal card visual */
.term{background:var(--abyss);border-radius:var(--r-lg);box-shadow:var(--shadow-float);
  overflow:hidden;border:1px solid #0c1420}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#0b121b;
  border-bottom:1px solid #101a26}
.term-bar i{width:11px;height:11px;border-radius:50%;background:#2a3543;display:block}
.term-bar i.r{background:#ff5f57}.term-bar i.y{background:#febc2e}.term-bar i.g{background:#28c840}
.term-bar span{margin-left:8px;color:#5c6675;font:500 12px/1 var(--mono)}
.term-body{padding:18px 18px 22px;font:400 13.5px/1.7 var(--mono);color:#c7d0dc;min-height:230px}
.term-body .cm{color:#5c6675}
.term-body .pr{color:var(--ember)}
.term-body .ok{color:#28c840}
.term-body .hl{color:#7fb0ff}
.term-cursor{display:inline-block;width:8px;height:16px;background:var(--ember);
  vertical-align:-3px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- sections ---------- */
section{padding:56px 0}
.sec-head{max-width:640px;margin-bottom:34px}
.sec-head h2{font-size:clamp(28px,3.6vw,40px);letter-spacing:-.025em}
.sec-head p{color:var(--graphite);margin-top:12px;font-size:17px}
.band{background:var(--fog)}

/* card grids */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r);
  padding:26px;transition:transform .2s cubic-bezier(.16,1,.3,1),box-shadow .2s,border-color .2s}
.card.hoverable:hover{transform:translateY(-3px);box-shadow:var(--shadow-float);border-color:var(--mist)}
.card .ico{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;
  justify-content:center;background:#fff4ee;color:var(--ember-ink);margin-bottom:16px}
.card .ico svg{width:22px;height:22px}
.card h3{font-size:19px;letter-spacing:-.02em}
.card p{color:var(--graphite);margin-top:9px;font-size:14.5px;line-height:1.55}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--ember-ink)}
.card.hoverable:hover .more svg{transform:translateX(3px)}
.card .more svg{width:15px;height:15px;transition:transform .18s}

/* feature split rows */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split.rev .split-media{order:-1}
.split h3{font-size:26px;letter-spacing:-.024em}
.split p{color:var(--graphite);margin-top:14px;font-size:16px}
.split ul{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.split ul li{position:relative;padding-left:26px;font-size:15px;color:var(--ink)}
.split ul li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;
  border-radius:50%;background:#fff4ee;border:1.5px solid var(--ember)}
.split ul li::after{content:"";position:absolute;left:5px;top:10px;width:6px;height:6px;
  border-radius:50%;background:var(--ember)}
.media-frame{background:var(--fog);border:1px solid var(--fog2);border-radius:var(--r-lg);
  overflow:hidden;aspect-ratio:4/3}
.media-frame img{width:100%;height:100%;object-fit:cover}

/* list / archive rows */
.rows{border-top:1px solid var(--fog2)}
.row{display:flex;align-items:center;gap:16px;padding:16px 6px;border-bottom:1px solid var(--fog2);
  transition:background .16s}
.row:hover{background:var(--fog)}
.row .rdate{font:500 12.5px/1 var(--mono);color:var(--steel);min-width:120px}
.row .rmain{flex:1;min-width:0}
.row .rmain b{font-weight:600;font-size:15.5px;display:block;letter-spacing:-.012em}
.row .rmain small{color:var(--pewter);font-size:13px}
.row .rarr{color:var(--steel);flex:none}

/* tags */
.tag{display:inline-flex;align-items:center;font-size:11.5px;font-weight:600;
  letter-spacing:.01em;color:var(--graphite);background:var(--fog);border:1px solid var(--fog2);
  padding:4px 10px;border-radius:var(--r-tag)}
.tag.ember{color:var(--ember-ink);background:#fff4ee;border-color:#ffdcc9}

/* ---------- blog cards ---------- */
.post-card{background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-float);border-color:var(--mist)}
.post-card .thumb{aspect-ratio:16/9;background:var(--fog);overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover}
.post-card .pc-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card .pc-meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:var(--pewter)}
.post-card h3{font-size:19px;letter-spacing:-.02em;line-height:1.25}
.post-card p{color:var(--graphite);font-size:14px;line-height:1.55}
.post-card .more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--ember-ink)}

/* featured post */
.feat{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch;
  background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r-lg);overflow:hidden;margin-bottom:32px}
.feat .thumb{background:var(--fog);overflow:hidden;min-height:280px}
.feat .thumb img{width:100%;height:100%;object-fit:cover}
.feat .fbody{padding:36px;display:flex;flex-direction:column;justify-content:center}
.feat h2{font-size:30px;letter-spacing:-.026em;line-height:1.15;margin:14px 0}
.feat p{color:var(--graphite);font-size:16px}

/* ---------- prose (articles, mails, howto) ---------- */
.page-head{padding:44px 0 8px}
.crumbs{font-size:13px;color:var(--steel);margin-bottom:16px;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a:hover{color:var(--ember-ink)}
.crumbs .sep{color:var(--mist)}
.page-head h1{font-size:clamp(30px,4.4vw,46px);letter-spacing:-.03em;line-height:1.06;max-width:20ch}
.page-head .sub{color:var(--graphite);font-size:18px;margin-top:16px;max-width:60ch}
.article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:36px 0 72px;align-items:start}
.prose{max-width:none;min-width:0;font-size:17px;line-height:1.72;color:#14181d;overflow-wrap:break-word}
.article>*{min-width:0}
.prose>*+*{margin-top:20px}
.prose h2{font-size:26px;letter-spacing:-.022em;margin-top:44px}
.prose h3{font-size:20px;letter-spacing:-.018em;margin-top:30px}
.prose a{color:var(--ember-ink);text-decoration:underline;text-underline-offset:2px;text-decoration-color:#ffcbb0}
.prose a:hover{text-decoration-color:var(--ember)}
.prose ul,.prose ol{margin:20px 0;padding-left:24px}
.prose li{margin:8px 0}
.prose blockquote{margin:26px 0;padding:18px 24px;background:var(--fog);border-left:3px solid var(--ember);
  border-radius:0 var(--r) var(--r) 0;color:#2a2f36;font-size:16px}
.prose blockquote p{margin:0}
.prose pre{background:var(--abyss);color:#d7dde6;border-radius:var(--r);padding:18px 20px;
  overflow:auto;font:400 13.5px/1.65 var(--mono);margin:22px 0}
.prose code{font-family:var(--mono);font-size:.9em}
.prose :not(pre)>code{background:var(--fog);border:1px solid var(--fog2);padding:1px 6px;
  border-radius:5px;color:var(--ember-ink)}
.prose img{border-radius:var(--r);margin:26px 0;border:1px solid var(--fog2)}

/* sidebar (TOC / related) */
.aside{position:sticky;top:88px;display:grid;gap:22px}
.aside .box{background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r);padding:20px}
.aside h4{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--steel);margin-bottom:14px}
.aside .rel{display:grid;gap:12px}
.aside .rel a{font-size:14.5px;font-weight:500;line-height:1.35;color:var(--ink)}
.aside .rel a:hover{color:var(--ember-ink)}
.aside .rel small{display:block;color:var(--pewter);font-size:12px;margin-top:2px;font-weight:400}

/* ---------- mailman / pipermail ---------- */
.mail{background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r);overflow:hidden}
.mail-head{padding:20px 26px;background:var(--fog);border-bottom:1px solid var(--fog2)}
.mail-head h1{font-size:22px;letter-spacing:-.02em;line-height:1.25}
.mail-meta{margin-top:14px;display:grid;gap:5px;font-size:13.5px;color:var(--graphite)}
.mail-meta b{color:var(--ink);font-weight:600;display:inline-block;min-width:96px}
.mail-body{padding:26px}
.mail-body p{margin:0 0 15px}
.mail-body pre{background:var(--abyss);color:#d7dde6;border-radius:var(--r);padding:16px 18px;
  overflow:auto;font:400 13px/1.6 var(--mono);margin:16px 0}
.mail-body blockquote{margin:0 0 15px;padding-left:14px;border-left:3px solid var(--mist);color:var(--pewter)}
.mail-nav{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}

/* listinfo subscribe */
.listinfo{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start;padding:20px 0 60px}
.subscribe{background:var(--paper);border:1px solid var(--fog2);border-radius:var(--r-lg);padding:30px}
.subscribe h3{font-size:20px;margin-bottom:6px}
.subscribe p.hint{color:var(--pewter);font-size:14px;margin-bottom:20px}
.field{display:grid;gap:6px;margin-bottom:16px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input{font-family:var(--sans);font-size:15px;padding:11px 14px;border:1px solid var(--mist);
  border-radius:var(--r);background:var(--paper);color:var(--ink)}
.field input::placeholder{color:var(--steel)}
.field input:focus{outline:none;border-color:var(--ember);box-shadow:0 0 0 3px rgba(255,89,0,.14)}
.subscribe .btn{width:100%;justify-content:center}

/* ---------- footer ---------- */
.foot{background:var(--abyss);color:#c3c8d2;padding:60px 0 34px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot .brand{color:#fff}
.foot-tag{color:#7a8394;font-size:14px;margin-top:14px;max-width:30ch;line-height:1.55}
.foot h5{color:#fff;font-size:13px;font-weight:600;margin:0 0 14px;letter-spacing:-.01em}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot ul a{font-size:14px;color:#9aa2b1;transition:color .16s}
.foot ul a:hover{color:var(--ember)}
.foot-bot{border-top:1px solid #121a26;margin-top:44px;padding-top:22px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#6b7484}

/* ---------- reveal motion ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.07s}
.reveal[data-d="2"]{transition-delay:.14s}
.reveal[data-d="3"]{transition-delay:.21s}

/* glow accent decoration */
.glow{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;z-index:-1}
.glow.a{width:360px;height:360px;background:radial-gradient(circle,#ffb98a,transparent 70%);top:-80px;right:-60px}

/* 404 */
.nf{text-align:center;padding:90px 0}
.nf .code{font:700 90px/1 var(--sans);letter-spacing:-.05em;color:var(--ink)}
.nf .code span{color:var(--ember)}
.nf p{color:var(--graphite);font-size:18px;margin:16px 0 28px}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid,.split,.feat,.listinfo{grid-template-columns:1fr}
  .split.rev .split-media{order:0}
  .article{grid-template-columns:1fr;gap:32px}
  .aside{position:static}
  .g3{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .feat .thumb{min-height:200px}
}
@media (max-width:640px){
  .nav-links,.nav-ghost,.nav-right{display:none}
  .burger{display:flex}
  .nav.open .nav-links{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;
    background:var(--paper);border-bottom:1px solid var(--fog2);padding:10px var(--gut);gap:2px}
  .nav.open .nav-links a{padding:11px 12px}
  .hero{padding:44px 0 28px}
  .g3,.g2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-meta{gap:20px}
  section{padding:42px 0}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .term-cursor{animation:none}
  html{scroll-behavior:auto}
}